Aonghus O'Donnell

Aonghus O'Donnell was the eldest son of Conchobar O'Donnell and the tenth O'Donnell chief, king of Tyrconnell from 1343 to 1352. After his uncle Niall murdered Conchobar in 1342, Aonghus drove him out in 1343 and was proclaimed Ó Domhnaill.

Niall kept disputing the lordship until his brother Maghnus killed him in 1348, securing Aonghus's rule. On his death in 1352, his uncle Feidhlimidh and brother Seán fought over the succession.